CT scanner with scatter radiation correction and method of...

Details CT scanner with scatter radiation correction and method of... CT scanner with scatter radiation correction and method of...

2009-06-08

2011-12-13

Yun, Jurie (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S019000

Reexamination Certificate

active

08077826

ABSTRACT:
A CT scanner with scatter correction device and a method for scatter correction are provided. The method of correcting CT images from artifacts caused by scattered radiation comprises affixing to the non-rotating frame of the CT gantry a plurality of shields for shielding some of the CT detector elements from direct X ray radiation, while allowing scattered radiation to arrive at said shielded elements; measuring scatter signals from said shielded elements, indicative of scattered radiation intensity; and correcting for scatter by subtracting scatter intensity values estimated from said measured scatter signals from signals measured by unshielded detector elements.

REFERENCES:
patent: 2011/0064190 (2011-03-01), Ruimi et al.

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